I think that Summoner has so much wasted potential and wasted skills. I think thats the case because it's designed to have your Summon pet fight along side you, but so many expansions later the pet code just doesn't work. Not for Summoner or Scholar. Pets feels slow and clunky and so many times a pet skill is wasted because it went off too late.

Get rid of the pet mechanic.

I'd rather your attacks be your summons. As an Arcanist you get Carbuncle and it can use Ruin, Bio, Miasma. As a summoner you learn to channel ifrit and now your single target attacks become ifrit attacks. You summon ifrit, it strikes, it disappears. You learn AoE skills that summon Garuda to stike. She appears, makes a whirlwind, she disappears. You learn defensive skills that summon Titan to protect you (stoneskin heh) and actually give him a use in battle instead of being wasted code.

As you grow as a summoner maybe you replace Ifrit with Shiva. Or learn a debuff skills that is Good King Moogle-Mog striking the mob. Or countless other possibilities.

I feel like this idea may turn Summoners play style more into what Black mage has but damn BLM feels powerful! Summoner has flying potatos.

As a side note I just saw there's level 40 Carbuncle skills. Oh god why would anyone still use Carbuncle at level 40. No other class has so much potential and yet so much skill wastage.